Balloon Rocket STEM Worksheet
What you do (Push back, move forward): 1. Thread the string through the straw and tie it tightly between two chairs. 2. Blow up the balloon (not too much) and pinch its neck shut. 3. Tape the balloon to the straw, neck pointing backward. 4. Let go, measure how far it goes, and keep it away from faces.
NameDateTime takenScore ___ / 40
- 1.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
- 2.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
- 3.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
- 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) the same string (c) how big we blow it (d) the same tape
- 6.True or false: the rocket goes backward. (a) True (b) False
- 7.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
- 8.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) the rowing boat (d) water a swimmer pushes
- 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) sticky tape (d) a balloon
- 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) sticky tape (c) a long string (d) a drinking straw
- 11.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) give them to a baby (d) keep them in your mouth
- 12.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
- 13.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
- 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) a balloon (d) a magnet
- 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
- 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) sticky tape (d) yeast
- 17.True or false: the rowing boat goes forward. (a) False (b) True
- 18.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) the rocket (d) air from the balloon
- 19.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
- 20.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) yeast (c) a drinking straw (d) a balloon
- 21.🚀 Which of these goes forward? (a) gas from the rocket (b) the swimmer (c) water from the oars (d) air from the balloon
- 22.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it travels less far (d) it goes backward first
- 23.True or false: air from the balloon goes backward. (a) False (b) True
- 24.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
- 25.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
- 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
- 27.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) vinegar (c) two chairs (d) turmeric powder
- 28.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) the string pulls it (d) a magnet pulls it
- 29.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
- 30.True or false: yeast is needed for the balloon rocket. (a) False (b) True
- 31.True or false: the rowing boat goes backward. (a) False (b) True
- 32.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
- 33.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 34.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
- 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we keep it the same (c) we measure it
- 36.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 37.True or false: air from the balloon goes forward. (a) True (b) False
- 38.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it gets too heavy (d) it changes colour
- 39.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
- 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) vinegar (d) two chairs
Answer key
- goes backward
- goes forward
- goes forward
- True
- how big we blow it
- False
- needed
- the rowing boat
- turmeric powder
- a mirror
- throw them away safely
- not needed
- True
- a magnet
- we keep it the same
- yeast
- True
- the rocket
- goes forward
- yeast
- the swimmer
- it travels less far
- True
- not needed
- it goes less far
- True
- two chairs
- escaping air pushes it
- False
- False
- False
- needed
- False
- not needed
- we keep it the same
- not needed
- False
- it can pop loudly
- False
- vinegar
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids